There are tons of deities in the Norse Pantheon. Some are very well-known while others are very obscure. The gods appear in many stories, folklore, sagas, and myths passed down through the ages. They are commonly referred to as the Aesir (anglicized from ‘Æsir‘). A few of them are also called the Vanir in reference to their tribe of origin.
This page talks about individual Norse deities. For information on the Norse pagan perspective on divinity, see Norse Polytheism. For information on deity worship, see veneration.